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Finding the Fourth Proportional to 8,915.92, 13,365.69 and 3,071.14

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Solution

The fourth proportional to 8,915.92, 13,365.69 and 3,071.14 is: 4,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.92 : 13,365.69 = 3,071.14 : x
  2. Step 2: Convert to fraction form
    8,915.92/13,365.69 = 3,071.14/x
  3. Step 3: Cross multiply
    8,915.92x = 13,365.69 × 3,071.14
  4. Step 4: Simplify right side
    8,915.92x = 41,047,905.19
  5. Step 5: Solve for x
    x = 41,047,905.19/8,915.92
  6. Step 6: Final answer
    x = 4,603.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.